You say that many of Jesus’ teachings are not just difficult – they are impossible! What makes you conclude they are impossible to live by?
If your right eye causes you to sin, gouge it out and throw it away. It is better for you to lose one part of your body than for your whole body to be thrown into hell.
And if your right hand causes you to sin, cut it off and throw it away. It is better for you to lose one part of your body than for your whole body to go into hell.
Matthew 5:29-30
Be perfect, therefore, as your heavenly Father is perfect.
Matthew 5:48